既有混凝土桥梁承载能力鉴定标准的研讨

该文借鉴建筑结构鉴定方法及等级评定标准,开展了既有混凝土桥梁承载能力鉴定标准的研究,提出了钢筋混凝土及预应力混凝土公路梁桥承载能力实用鉴定公式,收集了混凝土桥梁承载能力评定的专家意见,推导了承载能力折减系数η与结构抗弯可靠性指标β的关系曲线图,并建议了混凝土梁桥承载能力评定等级标准。

Study of Appraisal Standard for Carrying Capacity of Existing Concrete Bridges

Referencing the appraisal method and grade evaluation standard of building structures,the article puts forward the practical appraisal formula for the carrying capacity of the steel reinforced concrete and pre-stressed concrete highway bridges,collects the experts'opinions in the evaluation of the carrying capacity for the concrete bridges,deduces the relation curve between the reduction coefficient η of carrying capacity and the reliability index β of structure bending resistance,and suggests the appraisal grade standard of carrying capacity for concrete bridges.